Update graphviz dependency

[LachlanCourt]

No description provided.

[ysims]

LGTM

[LachlanCourt]

This appears to have fixed the problem although the build has a number of errors about event emitter @JosephusPaye MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 end listeners added to [PassThrough]. Use emitter.setMaxListeners() to increase limit

I don't think it has stopped the build but not sure if it's a major problem

[JosephusPaye]

That error you're seeing occurs when you have an event emitter which has more than 10 distinct listeners for the same event. Although the warning is not 100% accurate, when it shows up it usually means something weird is happening in the code (like registering event listeners in a loop).

We can get more information about where the issue is happening by running this...

node --trace-warnings node_modules/.bin/gatsby build

... which produces this output:

(node:69390) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 end listeners added to [PassThrough]. Use
emitter.setMaxListeners() to increase limit
    at _addListener (node:events:587:17)
    at PassThrough.addListener (node:events:605:10)
    at PassThrough.Readable.on (node:internal/streams/readable:887:35)
    at eos (node:internal/streams/end-of-stream:177:10)
    at pipe (node:internal/streams/pipeline:392:10)
    at pipelineImpl (node:internal/streams/pipeline:323:25)
    at pipeline (node:internal/streams/pipeline:151:10)
    at probeStream (/home/josephus/Code/nubook/node_modules/probe-image-size/stream.js:63:8)
    at get_image_size (/home/josephus/Code/nubook/node_modules/probe-image-size/index.js:13:12)
    at getImageSizeAsync (/home/josephus/Code/nubook/node_modules/gatsby-plugin-sharp/index.js:67:28)
    at getImageMetadata (/home/josephus/Code/nubook/node_modules/gatsby-plugin-sharp/image-data.js:33:39)
    at generateImageData (/home/josephus/Code/nubook/node_modules/gatsby-plugin-sharp/image-data.js:121:26)
    at resolver (/home/josephus/Code/nubook/node_modules/gatsby-transformer-sharp/customize-schema.js:605:31)
    at resolver (/home/josephus/Code/nubook/node_modules/gatsby/src/schema/resolvers.ts:668:20)
    at wrappedTracingResolver (/home/josephus/Code/nubook/node_modules/gatsby/src/schema/resolvers.ts:668:20)

Showing that the issue is in Gatsby itself (none of the stack entries are our code). Perhaps there's an updated version of Gatsby where this is fixed. A quick search shows Gatsby's had similar issues before:

• MaxListenersExceededWarning errors with gatsby-plugin-image StaticImage with placeholder gatsbyjs/gatsby#34795
• gatsby develop causes MaxListenersExceededWarning resource drain gatsbyjs/gatsby#5510

[LachlanCourt]

Ah thanks, I wasn't sure what path I was supposed to put after the node --trace_warnings ! This should hopefully fix the problem :)

[JosephusPaye]

LGTM!